A case history is described involving microbiologically influenced corrosion (MIC) of AISI Type 304L stainless steel piping failure after being in contact with untreated stagnant, low chloride potable water for nine months. Specialized microbiological analysis techniques, including scanning electron and optical cmicroscopy, were used in the failure analysis.
Corrosion and structural deterioration due to microbiologically influenced sulfate reduction and hydrogen sulfide gas oxidation to sulfuric acid are responsible for much of the expense related to santiatry sewage collection systems. This paper explains the mechanism of this biologically induced corrosion, its consequence, and methods to mediate it.
The cooling water system simulator is an automated pilot plant for evaluating anti-scaling, corrosion inhibitor and bio-fouling inhibitor chemicals in refinery cooling and bitumen extraction water systems which include heat exchangers and cooling towers. This paper describes the simulator's design, construction, modes of operation and commissioning.